TY - JOUR
T1 - Theoretical investigation of the influence of operating conditions on the treatment performance of an electrically-induced membrane bioreactor
AU - Giwa, A.
AU - Hasan, S. W.
N1 - Funding Information:
The authors wish to appreciate the financial support of Masdar Institute of Science and Technology, Abu Dhabi, UAE for the research grant (FSG 13WAMA1), and KUBOTA for supplying the filtration membrane.
Publisher Copyright:
© 2015 Elsevier Ltd.
PY - 2015/6/1
Y1 - 2015/6/1
N2 - This study aimed at investigating the impact of operating conditions on the treatment performance of an alternative method of wastewater treatment. The investigations were carried out in a hybrid reactor which combined simultaneous biodegradation of organic pollutants through microorganisms, membrane filtration through a submerged microfiltration (MF) membrane, and electrocoagulation process via application of electric field intermittently supplied. The theoretical investigations included mathematical modelling to determine the impact of the variations of process parameters such as current density (CD), hydraulic retention time (HRT), sludge retention time (SRT) and pore diameter of anode (dp) on the mixed liquor volatile suspended solids (MLVSS), and the removal of chemical oxygen demand (COD), total nitrogen (TN), total phosphorus (TP), iron (Fe), nickel (Ni), and chromium (Cr) from raw municipal wastewater directly supplied from the main sewer (without pre or primary treatment) at Masdar City, Abu Dhabi, United Arab Emirates. CD was varied between 5 and 20A/m2 with a step size of 10A/m2; HRT was varied by changing the influent flow rate between 20 and 50L/d with a step size of 10L/d; SRT was changed from 5 to 20d using a step size of 5d; and dp was changed from 0.2 to 0.5cm. It was observed from the theoretical results obtained that the removal of COD, TN, and TP from the wastewater was favored in the hybrid unit by increasing the CD or HRT and decreasing the porosity of anode.
AB - This study aimed at investigating the impact of operating conditions on the treatment performance of an alternative method of wastewater treatment. The investigations were carried out in a hybrid reactor which combined simultaneous biodegradation of organic pollutants through microorganisms, membrane filtration through a submerged microfiltration (MF) membrane, and electrocoagulation process via application of electric field intermittently supplied. The theoretical investigations included mathematical modelling to determine the impact of the variations of process parameters such as current density (CD), hydraulic retention time (HRT), sludge retention time (SRT) and pore diameter of anode (dp) on the mixed liquor volatile suspended solids (MLVSS), and the removal of chemical oxygen demand (COD), total nitrogen (TN), total phosphorus (TP), iron (Fe), nickel (Ni), and chromium (Cr) from raw municipal wastewater directly supplied from the main sewer (without pre or primary treatment) at Masdar City, Abu Dhabi, United Arab Emirates. CD was varied between 5 and 20A/m2 with a step size of 10A/m2; HRT was varied by changing the influent flow rate between 20 and 50L/d with a step size of 10L/d; SRT was changed from 5 to 20d using a step size of 5d; and dp was changed from 0.2 to 0.5cm. It was observed from the theoretical results obtained that the removal of COD, TN, and TP from the wastewater was favored in the hybrid unit by increasing the CD or HRT and decreasing the porosity of anode.
KW - Electrocoagulation
KW - Membrane bioreactor
KW - Operating conditions
KW - Treatment performance
KW - Wastewater
UR - https://www.scopus.com/pages/publications/84925443900
U2 - 10.1016/j.jwpe.2015.03.004
DO - 10.1016/j.jwpe.2015.03.004
M3 - Article
AN - SCOPUS:84925443900
SN - 2214-7144
VL - 6
SP - 72
EP - 82
JO - Journal of Water Process Engineering
JF - Journal of Water Process Engineering
ER -
